"Mobile advertising was the great hope for newspapers and magazines, replacing revenues lost in the switch to digital from print. Earlier this year the influential analyst Mary Meeker, of the venture capitalists Kleiner Perkins, had pegged it as a $25bn opportunity in the US alone. Now the hoped-for revenues are in peril, and publishers - and people who care about free, independent news - are rightly worried."

"The universities admissions service, Ucas, broke data protection rules when it signed up teenagers to receive adverts about mobile phones, energy drinks and other products, the information commissioner has ruled."